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A&P 2 > Ch. 17 - Part A > Flashcards

Ch. 17 - Part A Flashcards

1
Q

Side of heart that receives oxygen-poor blood from tissues

A

right side

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2
Q

The right side pumps blood to lungs via the…

A

pulmonary circuit

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3
Q

Side of heart that receives oxygenated blood from lungs

A

left side

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3
Q

The left side pumps blood to body tissues via the…

A

systemic circuit

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4
Q

Receiving chambers of heart

A

right and left atrium

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5
Q

right atrium

A

receives blood returning from systemic circuit (deoxygenated)

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6
Q

left atrium

A

receives blood returning from pulmonary circuit (oxygenated)

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7
Q

pumping chambers of heart

A

right and left ventricles

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8
Q

right ventricle

A

pumps blood through pulmonary circuit

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9
Q

left ventricle

A

pumps blood through systemic circuit

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10
Q

pericardium layers

A

fibrous and serous

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11
Q

serous pericardium layers

A

parietal and visceral

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12
Q

myocardium

A

circular or spiral bundles of contractile cardiac muscle cells

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13
Q

epicardium

A

visceral layer of serous pericardium

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14
Q

cardiac skeleton

A

crisscrossing, interlacing layers of connective tissue

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15
Q

cardiac skeleton functions

A

anchors cardiac muscle fibers, supports vessels and valves, limits spread of action potentials to specific paths

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16
Q

four chambers

A

two superior atria and two inferior ventricles

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17
Q

separates atria

A

interatrial septum

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18
Q

three veins empty into right atrium

A

superior vena cava, inferior vena cava, coronary sinus

19
Q

superior vena cava

A

returns blood from body regions above the diaphragm

20
Q

inferior vena cava

A

returns blood from body regions below the diaphragm

21
Q

coronary sinus

A

returns blood from coronary veins

22
Q

papillary muscles

A

project into ventricular cavity

23
Q

right ventricle pumps blood into..

A

pulmonary trunk

24
Q

left ventricle pumps blood into

A

aorta

25
Q

How are ventricles different from atria?

A

thicker walls, actual pumps of heart

26
Q

two major types of valves

A

atrioventricular and semilunar

27
Q

atrioventricular valves

A

prevent backflow into atria when ventricles contract

28
Q

semilunar valves

A

prevent backflow from major arteries back into ventricles

29
Q

two semilunar valves

A

pulmonary and aortic

29
Q

incompetent valve

A

blood backflows so hear repumps same blood over and over

30
Q

vavular stenosis

A

stiff flaps constrict opening, heart needs to exert for force to pump blood

31
Q

Pathway of blood through right side of heart

A

superior vena cava, inferior vena cava, coronary sinus, right atrium, triscupid valve, right ventricle, pulmonary semilumar valve, pulmonary trunk, pulmonary arteries lungs

32
Q

Pathway of blood through left side of heart

A

four pulmonary veins, left atrium, mitral valve, left ventricle, sortic semilunar valve, aorta, systemic circulation

33
Q

left coronary artery branches

A

anterior interventricular artery and circumflex artery

34
Q

right coronary artery branches

A

right marginal artery and posterior interventricular artery

35
Q

cardiac veins

A

collect blood from capillary beds

36
Q

coronary sinus

A

empties into right atrium

37
Q

angina pectoris

A

thoracic pain caused by fleeting deficiency in blood delivery to myocardium

38
Q

myocardial infarction (heart attack)

A

prolonged coronary blockage

39
Q

cardiac muscle

A

striated, short, branched, fat, interconnected

40
Q

cardiac muscle contains

A

lots of mitochondria and the rest is sarcomeres

41
Q

functional syncytium

A

a single coordinated unit

42
Q

what allows the heart to be a functional syncytium

A

desmosomes and gap junctions

43
Q

two kinds of myocites

A

contractile and pacemaker

44
Q
A

A&P 2 (19 decks)

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